ALLISON A U TO M AT I C TRANSMISSIONS
2000MH Series™
For Applications with...
• engines up to 205 kW (275 hp) gross input power and
up to 813 N•m (600 b-ft) gross input torque
• gross vehicle weights to 12,700 kg (28,000 lb)
2000MH Series™
SPECIFICATIONS
SPECIFICATIONS (shown w/ SAE No. 3 converter housing)
RATINGS1
Input Torque Input Power Turbine Torque
1000/2000/2400
Gross Gross2 Net3 GVW GCW N/V Ratio4
N•m kW N•m kg kg rpm/kmph
(lb-ft) (hp) (lb-ft) (lbs) (lbs) (rpm/mph) Vocations
Motor Home 813 205 1152 12,700 12,700 24-38 Motor Home
(600) (275) (850) (28,000) (28,000) (38-62)
SERIES™
1. Requires engine controls with Shift Energy Management (SEM)
2. Gross Power rating as defined by ISO 1585 or SAE J1995
3. Turbine Torque limit based on SCAAN standard deductions.
4. Guideline only. Ratio of transmission output rpm to vehicle ground speed.
TRANSMISSION
DRIVETRAIN INTERFACES
Acceptable full-load engine governed speed 2600 rpm
Acceptable engine idle speed range (with transmission in Drive) 500 – 900 rpm
Maximum output shaft speed 4500 rpm
FA M I LY
MOUNTING
To Engine SAE No. 3 (SAE No. 2 option available)
In Chassis No additional transmission support required
TORQUE CONVERTER
Type One stage, three element, polyphase.
Includes standard integral damper which is operational in lockup.
Model Stall Torque Ratio Kp-Factor* at Stall
TC-221 1.73 84.0 (97.8)
*Kp-Factor defines torque converter capacity. Kp = the ratio of converter pump speed [rpm] divided by the square root of the pump torque [N•m (lb-ft)]
MECHANICAL RATIOS (Gear ratios do not include torque converter multiplication)
Range
First 3.51 : 1
Second 1.90 : 1
Third 1.44 : 1
Fourth 1.00 : 1
Fifth 0.74 : 1
Reverse - 5.09 : 1
Ratio Coverage In forward range 4.74
05-Jun-01 2000MH
CONTROL SYSTEM
Description Electronic, closed loop, adaptive with stand-alone Transmission Control Module (TCM)
Shift Sequences [C = Converter Mode (lockup clutch disengaged); L = Lockup Mode (lockup clutch engaged)]
1C–2C–2L–3L–4L–5L
Driver-to-Transmission Interface 12-Volt
Transmission Range Selection Switch Allison Transmission
Shift Selector & Mechanical Cable Customer-Furnished
Communication Protocol - Engine/Vehicle Interface
Primary SAE J1939
Diagnostic Data Protocol SAE J1939
Diagnostic Connector Configuration (Customer-Furnished) SAE J1939 – 9 pin
Diagnostic Tools
Hardware platform PC
Software supplier Kent-Moore
PHYSICAL DESCRIPTION
Length (SAE No. 3 flywheel housing to park brake mounting provision) 694.7 mm (27.35 in)
(SAE No. 2 flywheel housing to park brake mounting provision) 704.4 mm (27.73 in)
Depth below transmission centerline 284.9 mm (11.22 in)
Dry weight 150 kg (330 lbs)
POWER TAKE-OFF PROVISION (OPTION)
PTO drive Turbine-driven spur gear
PTO mounting pads (2) SAE 6-Bolt, on either side of transmission main case
Positions (as viewed from rear): 3:00 and 9:00 o’clock
Rating with one PTO installed 1.00 x turbine speed; 339 N•m (250 lb-ft) max.
Rating with two PTO’s installed 1.00 x turbine speed; 271 N•m (200 lb-ft) max. each
Neutral Lockup Control for PTO available as an integral feature of the transmission control system.
Neutral Lockup is limited to engine speeds of 1000 rpm or greater.
OIL SYSTEM
Oil type TranSynd™
Initial fill (transmission only) 14 liters (15 quarts)
Main circuit oil filter Spin-on-canister
SPEEDOMETER PROVISIONS
Description (Provision 1) Non-zero-crossing square wave
Description (Provision 2) Zero-crossing square wave
Signal Frequency (Provisions 1 and 2 are identical) 8, 16, 20 or 40 pulses per revolution of transmission output shaft
Location (both provisions) Electronic output from transmission ECU
2000MH 05-Jun-01
TYPICAL VEHICLE APPLICATIONS
Motor Home
DESIGN FEATURES
W ith SAE No. 3
Conver ter Housing
05-Jun-01 2000MH
DESIGN FEATURES
W ith SAE No. 2
Conver ter Housing
2000MH 05-Jun-01
